Reading out the switches.
The article is ending without the explanation how you read out the switches through the MCP23017 IO expander. I'm particularly interested in how you set up the interrupt on the Raspberry Pi and how...
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Electricity [Grid] Frequency Meter
IMG20150602193201_Sml.jpgDescription: An article by Dieter Laues in the February 2012 issue of Elektor inspired me to get my soldering iron out. The article described how by measuring the frequency of...
View ArticleEmpty, all files moved to main project entry.
Attachments: 0 photos | 0 schematics | 0 PCB(s) | 0 software files | 0 other 9150704559
View ArticleJ²B Synthesizer - User manual
Hi Clemens, as I wrote in another post, I tried to assemble a guide for J²B Synthesizer, using your articles, part of the Atmegatron manual and some drawings I did.It's only a draft; the pages...
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Wassercomputer / Watercomputer
titel.jpgDescription: Hi,I was so stressed out lately because I didn’t have enough time for my electronic projects.Because I had to spend a lot of time to water my lawn and plants. And standing there,...
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Webinar 17/9/2015 - Making your own applications with the AndroidIO board
150057-55B.jpgDescription: The Elektor AndroidIO board gives you the opportunity to use any Android phone or tablet to control your project. You can add a sleek interface to it, or use the computing...
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PC Watchdog [140344]
140344-1_v1.1_top_view - main project picture.jpgDescription: By Willem den Hollander(original text) Most microprocessors have implemented a so-called Watchdog function. A counter continuously counts...
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Alimentation à découpage haute Tension.
carte.jpgDescription: Here is a high-voltage switched-mode power supply for tube amplifiers with the particularity that, besides being low cost, it uses a standard 2 x 30 V toroidal...
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Doorbell bodyguard [150400]
14291286-Bodyguard-Security-Stock-Vector.jpgDescription: You want to know who ring at your door but you are too far from your home ? The system works with a RaspberryPi and the GSM-BoB module...
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GSM Breakout board [150330]
DSCN4401.JPGDescription: This project is a BoB (Break-out board) used to communicate (with a SIMcard) on the GSM network.You cand find attached the schematic. Let me explain it to you : Power...
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150455 LED christmas ball
150455 1st prototype.JPGDescription: Back in 1997 Elektor made a LED Christmas ball with 32 LEDs which were driven by a P87c51 MCU. The project is pretty simple. The MCU drives the LEDs in such a way...
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MOSFET AND BJT Tester
default_project.jpgDescription: This device is used to test a MOSFET or BJT without having to remove it from the circuit which is connectedAttachments: 0 photos | 1 schematics | 0 PCB(s) | 0 software...
View ArticleWhich industry is this for?
Hello Mr Bera,Can you please tell us what exactly this application is for? It seems like you are controlling some huge machine with this, feeding coal into some kind of burner I suppose. What industry...
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1.2 V Battery checker by discharge
default_project.jpg Author: | 0 contributions | 0 members | 0 comments | viewsThis project was inspired by the Martin OSSMANN battery checker. I found it can be enhanced and simplified. My sheme scows...
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1.2 V Battery checker by discharge
DSC02443.JPGDescription: This project was inspired by the Martin OSSMANN battery checker. I found it can be enhanced and simplified. My sheme shows these improvements:1 - The ATMega328 is programmed by...
View ArticleClock frequency?
Did you check the clock frequency? Are your timers running at the correct frequency? The MCU in the Ossman project runs at 11.0592 MHz, the Arduino MCU normally runs at 16 MHz.Attachments: 0 photos |...
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10 MHz DDS Function Generator [150210]
Front.JPGDescription: Designed and text by Theodorou Gerasimos (Greece) 1.Prologue.The most important job of an engineer is not creation. It is the transfer of his knowledge. I will start to worry...
View ArticlePower Supply for the 10 MHz DDS Function Generator [150210]
This power supply is designed for project 10 MHz Function Generator DDS (project 150210) but also usable for other applications. It’s fully analog and only needs a single sided PCB. Shortcomings are...
View ArticleIn circuit programming of the ADuC7024 using ARMWSD.exe
Date: 4-8-2014About: In circuit programming of the ADuC7024 on PCB 150210-1-v1.11 Information about the ADuC7024 can be found here:Attachments: 0 photos | 0 schematics | 0 PCB(s) | 0 software...
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MLX90393 experiments [140555]
140555-52.jpgDescription: This is a support page for the Elektor October 2015 article about the MLX90393 Triaxis Micropower Magnetometer from Melexis.Buy it here.Attachments: 1 photos | 1 schematics |...
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